feat: enhance logging for character updates and voice cache management

dev.sh

@@ -1,7 +1,27 @@
 #!/bin/bash
-trap 'kill 0' EXIT
+trap 'kill 0' EXIT INT TERM
 
-(cd qwen3-tts-backend && DEV_MODE=true LOG_LEVEL=debug /home/bdim/miniconda3/envs/qwen3-tts/bin/uvicorn main:app --host 0.0.0.0 --port 8000 --reload --log-level debug 2>&1 | sed 's/^/[backend] /') &
-(cd qwen3-tts-frontend && npm run dev 2>&1 | sed 's/^/[frontend] /') &
+colorize() {
+    local color="$1" name="$2"
+    local R=$'\033[0m' DIM=$'\033[90m' YEL=$'\033[33m' RED=$'\033[31m'
+    local prefix="${color}[${name}]${R} "
+    while IFS= read -r line; do
+        if [[ "$line" =~ ^DEBUG ]]; then
+            printf '%s%s%s%s\n' "$prefix" "$DIM" "$line" "$R"
+        elif [[ "$line" =~ ^WARNING ]]; then
+            printf '%s%s%s%s\n' "$prefix" "$YEL" "$line" "$R"
+        elif [[ "$line" =~ ^(ERROR|CRITICAL) ]]; then
+            printf '%s%s%s%s\n' "$prefix" "$RED" "$line" "$R"
+        else
+            printf '%s%s\n' "$prefix" "$line"
+        fi
+    done
+}
+
+BLUE=$'\033[34m'
+MAGENTA=$'\033[35m'
+
+(cd qwen3-tts-backend && DEV_MODE=true LOG_LEVEL=debug /home/bdim/miniconda3/envs/qwen3-tts/bin/uvicorn main:app --host 0.0.0.0 --port 8000 --reload --log-level debug 2>&1 | colorize "$BLUE" "backend") &
+(cd qwen3-tts-frontend && npm run dev 2>&1 | colorize "$MAGENTA" "frontend") &
 
 wait

qwen3-tts-backend/api/audiobook.py

@@ -745,11 +745,13 @@ async def update_character(
 
     if (data.instruct is not None or data.gender is not None) and char.voice_design_id:
         voice_design = crud.get_voice_design(db, char.voice_design_id, current_user.id)
+        logger.info(f"update_character: char_id={char_id}, voice_design_id={char.voice_design_id}, found={voice_design is not None}")
         if voice_design:
             if data.instruct is not None:
                 voice_design.instruct = data.instruct
             voice_design.voice_cache_id = None
             db.commit()
+            logger.info(f"update_character: cleared voice_cache_id for design {voice_design.id}")
 
     return _char_to_response(char, db)
 

qwen3-tts-backend/core/audiobook_service.py

@@ -1474,6 +1474,12 @@ async def generate_character_preview(project_id: int, char_id: int, user: User,
     backend = await TTSServiceFactory.get_backend()
 
     try:
+        if force_recreate and design.voice_cache_id:
+            design.voice_cache_id = None
+            db.commit()
+            db.refresh(design)
+            logger.info(f"Cleared voice_cache_id for char {char_id} (force_recreate)")
+
         if not design.voice_cache_id:
             logger.info(f"Local voice cache missing for char {char_id}. Bootstrapping now...")
             from core.model_manager import ModelManager